There are no really exciting new features; this is very much a maintenance
release preparing for future extensions.
As a major release it has significant changes to the API. Although most
matchers stay the same, some configuration and parser methods have changed.
The handling of line-aware / offside parsing has also changed slightly.
I've summarised the changes at http://www.acooke.org/lepl/lepl5.0.html
This was way more work than I expected when I started to clean up the string
handling. While I will still be around to answer questions and fix bugs I am
not planning to start any new features for a month or two. When I do get back
I expect to look at the antlr parser work from Luca and then adding the
improved regexp engines.
Cheers,
Andrew